Mump 0811 22 Z Performance Rear Suspension Front View

Pass a 3/8-inch drill bit through the framerail insert tubes and drill a hole through the inner side of the frame. After drilling the first hole on the inside of the rail, place a bolt all the way through the insert and the inner side of the rail to ensure the insert stays in alignment while the second hole is drilled. Do this for both sides of the chassis mount.